Daniel Smith Luminescent watercolors are unlike anything ever seen in watercolor. They can simulate the glitter of a watery surface or the luster of mother-of-pearl. They're made from mica pigment, thin transparent particles coated with highly reflective metal oxides. Iridescent colors reflect light and their semi-transparent quality adds a fascinating sense of depth to your work. Iridescent Sunstone is a soft metallic pink with a glimmering gold surface.